Naismith's Rule Calculator
A web-based hiking time calculator that helps outdoor enthusiasts and Scout leaders estimate walking times using the time-tested Naismith's Rule.
What is Naismith's Rule?
Naismith's Rule is a mathematical formula used to estimate the time required to walk a route, taking into account the distance and elevation gain. The rule states that:
- Allow 1 hour for every 5 km (3 miles) of distance
- Add 1 hour for every 600 m (2,000 ft) of ascent
- Subtract 10 minutes for every 300 m (1,000 ft) of descent
This rule was developed by Scottish mountaineer William W. Naismith in 1892 and has been used by hikers, climbers, and outdoor professionals for over a century.
Features
- Simple Interface: Clean, intuitive design that works on desktop and mobile devices
- Accurate Calculations: Implements the classic Naismith's Rule formula with modern precision
- Multiple Units: Supports both metric and imperial measurements
- Real-time Updates: Calculations update instantly as you input values
- Mobile Friendly: Responsive design that works perfectly on smartphones
- No Registration: Use immediately without any sign-up required
- Privacy Focused: All calculations happen locally in your browser
Perfect For
- Scout Leaders: Plan troop hikes and outdoor activities with confidence
- Hikers: Estimate walking times for day trips and multi-day treks
- Climbers: Plan approach times to climbing areas
- Outdoor Educators: Teach navigation and route planning skills
- Adventure Groups: Coordinate group activities and meet-up times
- Emergency Planners: Estimate rescue and response times
How to Use
- Enter the total distance of your route
- Input the total elevation gain (climb)
- Add the total elevation loss (descent) if applicable
- Select your preferred unit system (metric or imperial)
- View your estimated walking time instantly
The calculator automatically applies Naismith's Rule and provides you with a reliable time estimate for planning your outdoor adventures.